Question

我有来自Facebook Graph API响应的以下数组结构。

  "data": [
    {
      "actions": [
        {
          "action_type": "comment",
          "value": "2"
        },
        {
          "action_type": "offsite_conversion",
          "value": "1606"
        }
      ],
      "date_start": "2017-04-03",
      "date_stop": "2017-05-02"
    },
    {
      "actions": [

        {
          "action_type": "post",
          "value": "2"
        },
        {
          "action_type": "post_reaction",
          "value": "33"
        },
        {
          "action_type": "page_engagement",
          "value": "816"
        },
        {
          "action_type": "post_engagement",
          "value": "807"
        },
        {
          "action_type": "offsite_conversion",
          "value": "1523"
        }
      ],
      "date_start": "2017-04-03",
      "date_stop": "2017-05-02"
    },
]

值的数量是灵活的，我想从“offsite_conversion”获取值。通常我会这样做：

data['data'][0]['actions']['1']['value']

但在这种情况下，这不起作用，因为['1']是可变的。

Answer 1

使用循环并测试操作类型。

foreach ($data['data'][0]['actions'] as $action) {
    if ($action['action_type'] == 'offsite_conversion') {
        $result = $data['value'];
        break;
    }
}

Answer 2

因为＆＃34; offsite_conversions＆＃34;永远是最后的

如果您正在寻找$data['data'][0]['actions'][LAST VALUE]['value']：

您对计数的想法应该有效：

$actions = $data['data'][0]['actions'];
$index = count($actions) - 1;

$value = $actions[$index]['value'];

Answer 3

所以不完全清楚你想要实现什么，但是以一种简单的方式你可以迭代你的$needed_values = array(); foreach ($data['data'] as $item) { foreach ($item['actions'] as $action) { if ($action['action_type'] == 'offsite_conversion') { $needed_values[] = $action['value']; } } }数组：

socket = new Socket(serverAddr, Integer.parseInt(server_port.getText().toString()));

Answer 4

假装$json保存来自facebook的数据

<?php
$data = json_decode($json);
$conversions = 0;
foreach ($data as $datum) {
  foreach ($datum['actions'] as $action) {
    if ($action['action_type'] === 'offsite_convserion') {
      $conversions += (int)$action['value'];
      break;
    }
  }
}

Answer 5

如果你不知道它在哪里，那么

Barmar是最好的方法，但如果你想要最后一个，它会更容易：

$result = end($data['data'][0]['actions'])['value'];

访问变量Array Data PHP

5 个答案: